Ringed Turtle-Doves also have a laugh-like  heh-heh-heh  call when excited. The White-winged Dove (Zenaida asiatica, also non-native) and the Mourning Dove (Zenaida macroura, a Florida native) are also very similar in size and appearance to the Eurasian Collared-Dove, but neither species has a black collar.
The megagametophyte produces an egg cell (or several egg cells in some groups) for the purpose of fertilization. After fertilization, the ovule develops into a seed.he ovary of the gynoecium produces one or more ovules and ultimately becomes the fruit wall. Ovules are attached to the placenta in the ovary through a stalk-like structure known as a funiculus (plural, funiculi). Different patterns of ovule attachment, or placentation, can be found among plant species, these include:
The ova within each cocoon are fertilized, and the resulting embryos grow inside the sealed unit, much like a chick developing inside an egg. When the embryos have consumed all the nutritive material, they completely fill the lemon shaped cocoon and are ready to hatch out one end.